I would rephrase slightly in keeping with noprogs point of the thread ... THE GOP CAN BE A GRASSROOTS ORGANIZATION.
If you think of this in terms of a war (it is), there is an 'asset' or a 'castle' (the 'GOP') in the field of battle. It would be very useful to have in conducting the greater war against another even more powerful enemy. The choice is to take the existing castle or to build a new one. In a business sense, this is also analogous to the question ... "Build or Buy". Take over an existing organization already conducting business, with customers and revenues, or to start from scatch, De novo. Either can work, but what is best? What is most effective? Particularly if your time is short?
I think noprogs is suggesting that the best strategy is to take over the existing GOP county by county, state by state, etc. rather than starting a third party from scratch (i/e. The American Independent Party).
I completely agree with noprogs. Get involved at every level and take over the existing GOP.
Thank you for your support and seeing what I was trying to say.
I hope others get it.